We will know who the Anti-Christ is when he becomes world leader, mocks God, sets up idols in his image for people to worship, kills Christians, oh yes we also need to have The Temple restored and built in Jerusalem for him to defile as well. The Anti-Christ will be known as "The Assyrian", he will come to power in the old Roman Empire, the USA was not even a nation 2000 years ago so none of those prophecy's fit or apply to someone rising to political power in the USA.
It is a waste of time and futile playing "spot the antichrist". Christ says we must be viligent int he end times, we know what to look for by studying prophecy, we know the events which will take place, so we can say "yes that is prophecy being fulfilled", this is equally true when looking out for the rise of the Anti-Christ. We will know it when it happens and not before.